263Specifying a flow log export destinationYou can export flow log entries to a log host or the information center, but not both. If you configure bothmethods, the system exports flow log entries to the information center.• If the destination is a log host, flow log entries are sent as binary characters in UDP. One UDPpacket can contain multiple log entries.• If the destination is the information center, flow log entries are converted to syslog entries in ASCIIformat, with the informational severity level. With the information center, you can specify multipleoutput destinations, including the console, log host, and log file. For more information about theinformation center, see "Configuring the information center."Log entries in ASCII format are human readable. However, the log data volume is higher in ASCII formatthan in binary format.Specifying a log host as the flow log export destinationStep Command Remarks1. Enter system view. system-view N/A2. Specify a log host as thedestination for flow logexport.userlog flow export [ vpn-instancevpn-instance-name ] host{ hostname | ipv4-address | ipv6ipv6-address } port udp-portBy default, no log hosts arespecified.To specify multiple log hosts,repeat this step.Specifying the information center as the flow log exportdestinationStep Command Remarks1. Enter system view. system-view N/A2. Specify the information centeras the destination for flow logexport.userlog flow syslogBy default, the information centerlog export destination is notconfigured.Displaying and maintaining flow logExecute display commands in any view.Task CommandDisplay flow log configuration and statistics. display userlog exportClear flow log statistics. reset userlog flow export
